CDisk.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2020, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */
#pragma once

#include <mrpt/math/geometry.h>
#include <mrpt/opengl/CRenderizableShaderTriangles.h>
#include <mrpt/poses/CPose3D.h>

namespace mrpt::opengl
{
/** A planar disk in the XY plane.
 *  \sa opengl::COpenGLScene
 *
 *  <div align="center">
 *  <table border="0" cellspan="4" cellspacing="4" style="border-width: 1px;
 * border-style: solid;">
 *   <tr> <td> mrpt::opengl::CDisk </td> <td> \image html preview_CDisk.png
 * </td> </tr>
 *  </table>
 *  </div>
 *
 * \ingroup mrpt_opengl_grp
 */
class CDisk : public CRenderizableShaderTriangles
{
    DEFINE_SERIALIZABLE(CDisk, mrpt::opengl)

   public:
    /** @name Renderizable shader API virtual methods
     * @{ */
    void onUpdateBuffers_Triangles() override;
    /** @} */

    void setDiskRadius(float outRadius, float inRadius = 0)
    {
        m_radiusIn = inRadius;
        m_radiusOut = outRadius;
        CRenderizable::notifyChange();
    }

    float getInRadius() const { return m_radiusIn; }
    float getOutRadius() const { return m_radiusOut; }

    /** Default=50 */
    void setSlicesCount(uint32_t N)
    {
        m_nSlices = N;
        CRenderizable::notifyChange();
    }

    /** Evaluates the bounding box of this object (including possible children)
     * in the coordinate frame of the object parent. */
    void getBoundingBox(
        mrpt::math::TPoint3D& bb_min,
        mrpt::math::TPoint3D& bb_max) const override;

    /** Ray tracing
     */
    bool traceRay(const mrpt::poses::CPose3D& o, double& dist) const override;

    /** Constructor
     */
    CDisk() = default;
    CDisk(float rOut, float rIn, uint32_t slices = 50)
        : m_radiusIn(rIn), m_radiusOut(rOut), m_nSlices(slices)
    {
    }

    /** Private, virtual destructor: only can be deleted from smart pointers */
    ~CDisk() override = default;

   protected:
    float m_radiusIn = 0, m_radiusOut = 1;
    uint32_t m_nSlices = 50;
};

}  // namespace mrpt::opengl